Pokemon FireRed and LeafGreen

Games Guru: For Deoxy, Mew and Lugia, you needed to go to a Nintendo event or Pokemon Center at a time when they were offering the Pokemon over wireless. Jirachi can be obtained from the bonus disc that comes with Pokemon Coliseum.

Where do I catch Mew?

Games Guru: Ah, Mew. Mew and Celebi are not in FireRed or LeafGreen. Sorry.

Can I catch any of the starter Pokemon as wild Pokemon, or can I only receive them from Professor Oak?

Games Guru: The only way to collect more than one of the starter Pokemon is to trade for them.

I can’t find any slowpoke. Can you tell me where I can catch it?

Games Guru: They are pretty common if you go fishing for them in LeafGreen. Check around the ice caves.

Where do you find Mewtwo?

Games Guru: Finding Mewtwo is a matter of time and location. Mewtwo is in the back of a cave a bit to the north and west of the town of Cerulean. To get to the cave, head north out of Cerulean and cross the bridge, then go west and hop in the river. The river will lead you to the mouth of the cave.

Before you can enter the cave, however, you will need to beat the Elite Four and more. You will need to explore the islands to the south and help the people on those islands solve a certain computer problem.

Does Venusaur beat the elite four in Pokemon FireRed and LeafGreen?

Games Guru: Venusaur is a great Pokemon, but you’re in for some trouble if you try to beat the Elite Four with just one Pokemon. Lance, the fourth member of the Elite Four, specializes in dragon Pokemon. His fire beasts will make short work of a lone Venusaur.

To c92,
Oh and by the way, there are 7 islands, not counting the ones you need special tickets that you can only get at Nintendo events or by using a game shark, (hints in the name sevii islands, which is actually not why they are called that, if you are curious about there name just ask).

To c92,
After you beat the 7th gym leader you are invited by Bill to get on a boat. That boat takes you to islands 1-3 of the sevii islands. After you catch 60 pokemon and beat the elite four you get the national pokedex. Then talk to Celio in the pokemon center on island 1. If you go up to Mt. Ember you will battle some rockets then in the cave behind them you will literally find a ruby, as in a big red gem. Give it to celio and you can go to islands 4-7. I explain the sapphire later, after you do all of that stuff.

To c92,
Your questions relate. To fix the computer you must give Celio the ruby and sapphire, which you will find on the sevii islands (to long to explain now). To get into Cerulan Cave you must fix the computer.

To werock,
Most of those are either not in this game, you can use the area feature on your pokedex to find them, or you just evolve another pokemon to get them. You listed to many to tell you all of them.